Wall Street slipped from record highs at the open on Friday as investors assessed the U.S. employment report for January that showed acceleration in jobs growth but included a downward revision to some previous numbers. The S&P 500 opened lower by 10.24 points, or 0.31%, at 3,335.54 and the Nasdaq Composite dropped 45.51 points, or 0.48%, to 9,526.64 at the opening bell.